System, method and apparatus for generating acoustic signals based on biometric information

ABSTRACT

An apparatus, method and system are provided for sensing an individual&#39;s biometric information, and generating and transmitting an acoustic signal representative of the sensed biometric information. The acoustic signal may be transmitted as an audio signal or an ultrasonic signal to another apparatus in the system for authentication or verification of the individual&#39;s identity.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of U.S. patent applicationSer. No. 14/293,683, which is a continuation of U.S. patent applicationSer. No. 13/905,848, filed May 30, 2013, now U.S. Pat. No. 8,744,139,which is a continuation-in-part of U.S. patent application Ser. No.13/181,940, filed July 13, 2011, which are incorporated herein byreference. Through U.S. patent application Ser. No. 13/905,848, thisapplication claims the priority of U.S. Provisional Application No.61/653,046, filed May 30, 2012, which is incorporated herein byreference.

FIELD OF THE INVENTION

The present invention relates to a system, method and apparatus forgenerating an acoustic signal or digital data communicationrepresentative of an individual's unique biometric information.

BACKGROUND

Biometric identification systems use sensor technologies to obtaininformation regarding an individual's unique physical characteristicsand compare the obtained information with verified reference informationto confirm the identity of the individual. Known biometricidentification systems have used optical, thermal, capacitive,impedance, radio-frequency, conductance and ultrasonic based sensors fordetecting biometric information.

Physical characteristics that are commonly used for biometricidentification include unique features from an individual's facialfeatures or geometry, iris, hand geometry, vein pattern, voice, palm andfingerpads. The most predominantly used physical characteristics forbiometric identification are the minutiae or macrofeatures found on thedermal surface of an individual's fingerpad. For example, anindividual's fingerpad is covered with a pattern of ridges and valleyscommonly referred to as a fingerprint. A typical fingerprint scancontains about 30 to 40 minutiae and macrofeatures which are uniquebiometric identification characteristics. The dermal surface of anindividual's finger also has between 50 and 300 sweat gland poreslocated on the fingerprint ridges. Like an individual's fingerprint, thenumber and locations of sweat gland pores on an individual's fingerpaddo not change and provide unique biometric identificationcharacteristics. Moreover, the locations of an individual's sweat glandpores relative to the fingerprint minutiae or macrofeatures provides anadditional biometric identification measure.

The common traits to biometric identification measures are theirpermanence and uniqueness. However, these basic traits also make thebiometric identification systems vulnerable to spoofing. Spoofing is theact of using an artificial biometric sample (such as a “fake finger”)containing a replica of an authorized individual's fingerpad to enablean unauthorized individual to gain access to a secured system. Spoofingmay also be used to enable an individual to pass himself off as anotherindividual at a security checkpoint. Typically, the replicated fingerpadis formed of a synthetic material such as gelatin (including gummi whichis obtained by gelling aqueous solution of gelatin), silicone, epoxy,latex and the like.

Anti-spoofing systems typically are designed to detect the liveness ofthe physical sample presented to the biometric detection sensor. Most ofthese systems involve relatively large sensors which are unacceptablefor mobile or portable devices. In addition, anti-spoofing systems aretypically directed to detecting a liveness measure of the finger such asfinger surface resistance, temperature, pulse, moisture, and bloodoximetry. These systems, however, can be circumvented because theyoperate by comparing the detected liveness measure value to apredetermined acceptable range. Namely, it is possible to design anartificial biometric sample which produces a detected liveness measurewithin a known acceptable range. For example, artificial biometricsamples can be made of materials with electrical properties resemblingthat of a living finger and which yield a biometric liveness measurewithin a given acceptable range.

SUMMARY OF THE INVENTION

According to one object of the invention, the device transmits anacoustic signal representative of the detected biometric information.The acoustic signal may be either an audio signal or an ultrasonicsignal.

According to another object of the invention, the device transmits awireless communication containing digitized data representative of thedetected biometric information.

According to another objection of the invention, the biometric device isconfigured to generate a visual display upon detecting and processing anindividual's biometric information.

According to a further objection of the invention, the biometric devicemay be a portable device configured to transmit a communicationrepresentative of the detected biometric information to an externaldevice that, in turn, is configured to generate a visual display basedon the detected biometric information.

It is another object of the present invention to provide a portablebiometric device which detects, processes and transmits biometricinformation to an external device which, in turn, emits an audioacoustic signal and/or visual display representative of the biometricinformation

DESCRIPTION OF DRAWINGS

These and other aspects of the invention will be described withreference to the drawings, in which:

FIG. 1 is a block diagram of an exemplary embodiment of the presentinvention;

FIG. 2 is a schematic diagram illustrating an exemplary embodiment of asensor module that may be used with the present invention;

FIG. 3 is an exemplary illustration of a fingerpad image producedaccording to the exemplary embodiment of the sensor module shown in FIG.2;

FIG. 4 is a flowchart illustrating an exemplary process for thedetection and analysis of biometric information for biometricidentification by the sensor and processing modules according to thepresent invention;

FIG. 5 is a flowchart illustrating an exemplary process for thedetection and analysis of biometric identification and proof of livenessby the sensor and processing modules according to the present invention;

FIG. 6 is a flowchart illustrating an exemplary process for thedetection and analysis of biometric information for biometricidentification by the sensor and processing modules according to thepresent invention;

FIG. 7 is a schematic illustrating an embodiment of a methodologyemployed by the processing module to process an acoustic signalrepresentative of the detected biometric information;

FIG. 8 is a schematic illustrating another embodiment of a methodologyemployed by the processing module to process an acoustic signalrepresentative of the detected biometric information;

FIG. 9 is a flowchart illustrating an exemplary authentication processfor the sensor and processing modules based on the detected biometricinformation in accordance with the present invention;

FIG. 10 is a schematic diagram illustrating an exemplary embodiment of asensor module that may be used with the present invention.

FIG. 11 is an exemplary illustration of a fingerpad image producedaccording to the exemplary embodiment of the sensor module shown in FIG.10;

FIG. 12 is a flowchart illustrating an exemplary process for thedetection and analysis of biometric information for biometricidentification by the sensor and processing modules according to thepresent invention; and

FIG. 13 is an illustration of a triggering system for capturingbiometric identification information according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIG. 1, an embodiment of the present inventioncomprises a device 10 having a sensor module 20 configured to detect anindividual's biometric information, a processing module 30 configured toprocess the detected biometric information to an acoustic signal ordigital data communication, and a transmitter module 40 configured togenerate and emit an acoustic signal or a digital data communication. Itwill be understood that each of these modules may be integrated in asingle unit or deployed in two or more separate units.

Sensor Module

The sensor module 20 is configured to detect a unique biometriccharacteristic of an individual, such as an individual's fingerprints,sweat gland pores, voice, facial features, iris, eye shape, ear shape,hand geometry, vein patterns, heartbeat, blood flow, gestures, writingsample, DNA, skin color, body vibration, brain wave, electromagneticfield or aura, balance, body scent, or any other known biometric. Thesensor module 20 may implement any of a number of different detectionmethods including electromagnetic, optical, ultrasound or solid state,and may comprise a capacitive, impedance, RF, conductance, thermaland/or piezoelectric device. It will be understood that sensor module 20may be configured to obtain analog-based biometric information and/ordigital-based biometric information.

By way of example, sensor module 20 may comprise an optical sensor suchas a high resolution CCD array camera for detecting an individual'sfingerprints, sweat gland pores, facial features, iris, eye shape, earshape, hand geometry, gestures, writing sample. By way of furtherexample, sensor module 20 may comprise a spectrometer for detecting anindividual's voice, vein pattern, heartbeat, blood flow, DNA, skincolor, body vibration, electromagnetic field or aura, brain wave,balance, body scent or any other know biometric.

Furthermore, sensor module 20 may comprise a device such as illustratedin FIG. 2 and FIG. 10 that is configured to detect both permanent andvariable unique physical characteristics so as to provideidentification, authentication and/or proof of liveness of theindividual. For the purpose of illustrating various aspects of thepresent invention, the devices in FIGS. 2 and 10 will be used herein asexemplary embodiments of sensor modules.

FIG. 2 is a schematic diagram illustrating an exemplary embodiment of asensor module that may be used with the present invention. As shown inFIG. 2, sensor module 100 comprises a voltage source 140, a transparentelectrode 110, and an image capture device 150. Voltage source 140 isconfigured to generate an electrical current through transparentelectrode 110, which induces an electromagnetic field 170.

Preferably, voltage source 140 is an alternating current voltage sourceand the resulting alternating electrical current transmitted throughtransparent electrode 110 is between about 0.01 milliamps and about 25milliamps, and more preferably between about 0.5 milliamps and about 5.0milliamps. In addition, the resulting alternating electrical currenttransmitted through transparent electrode 110 preferably has a frequencyof about 60 Hz or less, and more preferably between about 20 Hz to about50 Hz.

It will be understood, however, that any electrical current that inducesan electromagnetic field which enables biometric identification and/orproof of liveness based on the detection and analysis of sweat glandpores falls within the scope of the present invention. For example, acurrent greater than about 25 milliamps may be used if a suitableinsulator is used to prevent physiological reaction with an individual'sdermal surface. Similarly, a current less than about 0.01 milliamps maybe used if a suitable amplifier or other device is used to enable thedetection of the variations, fluctuations or disturbances to theelectromagnetic field caused by the interaction with the individual'sdermal surface. In addition, the electromagnetic field may be induced bya pulsed electrical current. Although not shown in FIG. 2, it will beappreciated that the electrical circuitry of apparatus 100 is configuredto provide the desired electrical current through the electrode 110,which, in turn, induces electromagnetic field 170.

Transparent electrode 110 may comprise a transparent glass substrate 115having a transparent current conductive coating layer 130 on its bottomsurface. In addition, the top surface of the transparent electrode 110is dimensioned to receive the individual's fingerpad and may be coatedwith a transparent polymer material 120 to prevent electrical chargefrom being transmitted to the individual's fingerpad. It will beunderstood that transparent electrode 110 may be configured to receivemultiple fingerpads, a palm or any other skin surface having sweat glandpores. The transparent glass substrate may also comprise optical glassformed of glass fiber strands.

Image capture device 150 is configured to capture an image of thefluoresced biological points representing the location, size, shape andactivity of sweat gland pores on the fingerpad placed in the proximityof the transparent electrode 110. Image capture device 150 may comprisea solid state camera such as a computer controlled CCD array cameraconfigured to capture real-time visualization of the fingerpad image ora spectrophotometer. It will be understood that the image capture devicemay alternatively capture a negative of the image, thereby representingthe biological points as black points on a white background.

Without wishing to be bound by any scientific theory and explanation,applicant believes that the electrical current produced by the voltagesource 140 induces an electro-magnetic field 170 in the vicinity of thetransparent electrode 110. When an individual's finger is placed in theproximity of the top surface of transparent electrode 110,electromagnetic field 170 stimulates and excites molecules associatedwith complex metabolic waste substances (such as sweat gland amino acidmolecules), loosely bound atmospheric water vapor residing on the dermalsurface of an individual's fingerpad, and other materials includingatomic oxygen. This, in turn, causes compounds adjacent to the ionswithin the excited molecules to become visible or fluoresce. It isfurther believed that the fluoresced molecules travel along the dermalsurface to open sweat pores because the high levels of salt, water andamino acid in the sweat glands provides a superior grounding path forthe ions.

Apparatus 100 may be adapted to capture an image containing both afingerprint pattern and fluoresced points identifying the sweat pores.For example, it will be understood that the resolution of the imagecapture device 150 and/or the voltage, rate and/or duration of theelectrical charge generated by voltage source 140 may be modified tocapture an image of both the fingerprint and fluoresced points on thefingerpad. Capture of the fingerprint image does not require an externallight source reflected on the fingerpad because the fingerprint isilluminated by the fluorescence of the excited molecules caused by theelectromagnetic field 170.

Alternatively, apparatus 100 may be configured to separately capture animage of the points of fluorescence corresponding to the sweat glandpore locations and an image of the fingerprints. According to thisconfiguration, apparatus 100 may include a light source and thefingerprint biometric information may be obtained by image capturedevice 150. It will be appreciated that the fingerprint biometricinformation may also be obtained using a scanner or any other type ofknown system for fingerprint sensing. If separately obtained, the systemmay be configured to juxtapose the sweat gland pore and fingerprintbiometric information as shown in FIG. 3 to map the locations of thesweat gland pores relative to the fingerprints and provide a thirdbiometric measure.

FIG. 10 is a schematic diagram illustrating another exemplary embodimentof a sensor module which may be used with the present invention. Asshown in FIG. 10, the sensor module 900 comprises a voltage source 940,an electrode 910 and an electromagnetic field reader 980. Voltage source940 is configured to generate an electrical current through electrode910, which induces an electromagnetic field 970.

Preferably, voltage source 940 is an alternating current voltage sourceand the resulting alternating electrical current transmitted throughelectrode 910 is between about 0.01 milliamps and about 25 milliamps,and more preferably between about 0.5 milliamps and about 5.0 milliamps.In addition, the resulting alternating electrical current transmittedthrough transparent electrode 910 preferably has a frequency of about 60Hz or less, and more preferably between about 20 Hz to about 50 Hz.

It will be understood, however, that any electrical current that inducesan electromagnetic field which enables biometric identification and/orproof of liveness based on the detection and analysis of sweat glandpores falls within the scope of the present invention. For example, acurrent greater than about 25 milliamps may be used if a suitableinsulator is used to prevent physiological reaction with an individual'sdermal surface. Similarly, a current less than about 0.01 milliamps maybe used if a suitable amplifier or other device is used to enable thedetection of the variations, fluctuations or disturbances to theelectromagnetic field caused by the interaction with the individual'sdermal surface. In addition, the electromagnetic field may be induced bya pulsed electrical current. Although not shown in FIG. 10, it will beappreciated that the electrical circuitry of apparatus 900 is configuredto provide the desired electrical current through the electrode 910,which, in turn, induced electromagnetic field 970.

As shown in FIG. 10, electromagnetic field reader 980 may be integrallyformed with electrode 910. Alternatively, it will be understood thatelectromagnetic field reader 980 may be positioned separately fromelectrode 910 at any location that is suitable for monitoringelectromagnetic field 970. The top surface of the apparatus configuredto receive the individual's fingerpad may optionally be coated with apolymer material 920 to prevent electrical charge from being transmittedto the individual's fingerpad.

According to this embodiment, the electrode 910 is configured to emit anelectromagnetic field 970 induced by the electrical current generated byvoltage source 940. Electromagnetic field reader 980 is configured todetect and capture information regarding electromagnetic field 970,including any variations, fluctuations or disturbances thereto when anindividual's fingerpad is placed in the proximity of electromagneticfield 970. Apparatus 900 may include a controller (not shown) configuredto interface with the electromagnetic field reader 980 and analyze theelectromagnetic field information detected by the electromagnetic fieldreader 980 when the individual's fingerpad is placed in the proximity ofelectromagnetic field 970. The controller may comprise a graphicsprocessor capable of storing, processing and/or generating an imagerepresentative of the electromagnetic field information detected byelectromagnetic field reader 980.

Processor Module

The processor module 30 may comprise a controller configured to process,store, search, identify, instruct, generate, compare, match, and/orupdate data. The controller may be based on common computer systems thatmay comprise, but are not limited to, components such as a computersystemization connected to memory.

According to one aspect of the present invention, the processor module30 comprises a controller configured to process an acoustic signalderived from and representative of the detected biometric information.By way of example, the processor module 20 may comprise a sub-modulehaving one or more algorithms loaded as software or firmware, orhardwired into the controller for processing the detected biometricinformation to an acoustic signal.

It will be understood that processor module 20 may comprise ananalog-to-digital module for processing analog-based detected biometricinformation to a digital data signal, an analog-to-analog module forprocessing analog-based detected biometric information to an analogsignal, and/or a digital-to-analog module for processing digital-basedbiometric information to an analog signal. Alternatively, processormodule 30 may be configured to process digital-based or analog-baseddetected biometric information to a digital data communication signal.

Exemplary methodologies and algorithms for generating an acoustic signalor digital data communication signal based on the sensed biometricinformation are described herein with reference to FIGS. 7 and 8. Thepresent invention may, however, be embodied in many different forms.including variations to and combinations of these exemplarymethodologies and algorithms, as well as other alternative methodologiesand algorithms.

FIG. 7 illustrates an exemplary methodology that may be used by theprocessor module 30 to process the detected biometric information to anacoustic signal. It is understood that an individual's fingerprint scantypically contains about 30 to 40 unique minutiae and macrofeatures.According to the methodology illustrated in FIG. 7, the location of eachof these unique minutiae and macrofeatures is designated two differentmusical values using a two dimensional Cartesian coordinate system. Withreference to the exemplary two dimensional musical value coordinatesystem of FIG. 7, each unique minutiae and macrofeature will have anoctave key signature value and major & minor root scale key signaturevalue based on its position on the two dimensional coordinate system. Anarrangement of two or more of these resulting octave/major & minor rootscale musical values may be used to generate a unique “musical pattern”representative of the individual's sensed biometric information.

It will be understood that the two dimensional coordinate system of FIG.7 may use any two musical elements such as: (1) key signatures,including octave scale, major & minor root scale, individual notes,chords, scales, inversion and chromatic scales; (2) meter, includingtempo, rhythm, beat, cadence; (3) reverb; and (4) volume amplitude orvelocity, base intensity, etc.

It will be further understood that a three dimensional coordinate systemmay be used having three different musical elements. For example, inaddition to assigning each unique minutiae and macrofeature two musicalelements based on its position using two dimensions of the coordinatesystem, each unique minutiae and macrofeature may be assigned a thirdmusical element based on its configuration (e.g., depth, width orcontour of fingerprint ridge or valley, distance between fingerprintridges or valleys). In this example, each unique minutiae andmacrofeature may have first and second musical elements (e.g., octaveand major & minor root scale key signature values) based on its positionrelative to two dimensions of the three dimensional coordinate systemand a third musical element (e.g., volume, amplitude, velocity, baseintensity, etc.) based on a characteristic of the configuration of eachminutiae and macrofeature or a combination of minutiae and macrofeatures(e.g., positional relationship of a cluster of minutiae and macrofeatures).

It will be understood that the exemplary two dimensional coordinatesystem shown in FIG. 7 may be applied to other unique biometricinformation (sweat gland pores, voice, facial features or geometry, irispattern, hand geometry, vein pattern, heartbeat, blood flow, gestures,writing sample, DNA, skin color, body vibration, electromagnetic fieldor aura, brain wave, balance and/or body scent) to yield a “musicalpattern.” For example, the location, shape, size, positionalrelationship and activity level of sweat gland pores located on anindividual's dermal surface may be the biometric information used inconjunction with the two dimensional coordinate system shown in FIG. 7for generating a musical representation. In the same manner as describedabove with regard to fingerprint minutiae and macrofeatures, each sweatgland pore will have two different musical elements (e.g. octave scalekey signature and major & minor scale key signature), and an arrangementof the musical elements for two or more sweat gland pore locations canbe used to generate a “musical pattern” representative of theindividual's unique biometric information.

As further described above with regard to fingerprint and macrofeatures,the detected sweat gland pores may have a third musical element (e.g.,volume, base intensity, etc.) based on another unique characteristic(e.g., size, shape, activity level, degree of detected fluorescence) ofeach sweat gland pore or a combination of sweat gland pores (e.g.,positional relationship of a cluster of sweat gland pores). The use ofany variable sweat gland pore characteristics such as the number ofopen/closed sweat gland pores, or the size, activity level or degree offluorescence of open sweat gland pores provides for at least a slightlydifferent musical representation each time the individual's biometricsare measured. Since the brightness of the fluorescence or level of sweatgland pore activity may indicative of an individual's mood orpsychological state, these variable sweat gland pore biometrics may beused to vary the volume or tempo of the musical representation.

It will be understood that other methodologies can be used for analysisof the biometric information in connection with the two dimensionalCartesian coordinate system illustrated in FIG. 7. For example, thefingerprint biometric information contained in the image shown in FIG. 7can be represented by a two dimensional gray-scale matrix by assigninggray-scale values for each pixel in the image. The two dimensional grayscale matrix may be converted to a one-dimensional projection relativeto either axis of the two dimensional coordinate system. For example,this can be achieved by calculating the sum of all of the gray scalevalues for the pixels in each column along the axis defined by the major& minor root scale values. Alternatively, the one-dimensional projectionmay be calculated by calculating the average gray-scale value for all ofthe pixels in each column along the axis defined by the major & minorroot scale. Each point on the one-dimensional projection will have anoctave key signature value and major & minor root scale key signaturevalue based on its position on the two dimensional coordinate system. Anarrangement of two or more of these resulting octave/major & minor rootscale musical values may be used to generate a unique “musical pattern”representative of the individual's sensed biometric information.

FIG. 8 illustrates another exemplar methodology that may be used to bythe processor module 30 to generate a musical representation of anindividual's unique biometric information. The particular arrangementand selection of key signatures provided in FIG. 8 are illustrative andother arrangements and combinations can be used in place of thoseprovided in FIG. 8. Moreover, the methodology and algorithm may beadapted to permit an individual to be involved in the selection of themusical elements or arrangement for generating the musicalrepresentation. In addition, other musical elements and combinations ofmusical elements can be used in place of those provided in FIG. 8.

On embodiment of the methodology illustrated in FIG. 8 will be describedwith reference to the unique number and locations of fingerprintminutiae and macrofeatures. According to this embodiment, each minutiaeand macrofeature is positioned on a radial axis of the coordinatesystem. Based on the point of intersection of the radial axis with theinner and outer rings of the coordinate system, each minutiae andmacrofeature has two musical values—a first musical value correspondingto the intersection point of the radial axis with the inner ring of thecoordinate system and a second musical value corresponding tointersection point of the radial axis with the outer ring of thecoordinate system. Although the illustrative example shown in FIG. 8 isscaled to provide 12 different key signature values in each of the innerand outer rings, the number and values of the key signatures in each ofthe inner and outer ring may be varied. The total musical properties forthe musical biometric representation are 24 major & minor keys, sevenoctaves (not using the minor third) and 26 key signatures, each in sharpand flat. Furthermore, it will be understood that the points ofintersection of each radius with the inner and outer rings between anytwo key signature scale value corresponds to an extrapolated keysignature value based on the two adjacent key signature scale values. Anarrangement of the musical values for a combination of any two or moreof these fingerprint minutiae/macrofeature locations may be used togenerate a unique “musical pattern” representative of the individual'ssensed biometric information.

In addition, it will be appreciated that each minutiae and macrofeaturemay have a third musical element (e.g., volume, amplitude, velocity,base intensity, etc.) corresponding to the distance of theminutiae/macrofeature location from the pole or centerpoint of thecoordinate system. Moreover, each minutiae and macrofeature may have yetanother musical element (e.g., tempo, rhythm, pace) based on acharacteristic of the configuration of each minutiae and macrofeature ora combination of minutiae and macrofeatures (e.g., positionalrelationship of a cluster of minutiae and macro features).

According to another embodiment of the methodology illustrated in FIG.8, the coordinate system defines sectors between adjacent musicalelements designated on the inner ring. The polar coordinate system shownin FIG. 8 has 12 different sectors. Each such sector corresponds to apair of musical elements—one on the inner ring and a second on the outerring. For example, the sector defined by the radial lines intersectingthe A minor and E minor points on the inner ring corresponds to an Eminor and a G musical elements. Similarly, the sector defined by theradial lines intersecting the E minor and B minor points on the innerring corresponds to a B minor and a D musical elements. Any minutiae ormacrofeature contained within a particular sector will be assigned thetwo musical elements corresponding to that sector. each minutiae andmacrofeature may have a third musical element (e.g., volume, amplitude,velocity, base intensity, etc.) corresponding to the distance of theminutiae/macrofeature location from the pole or centerpoint of thecoordinate system. Moreover, each minutiae and macrofeature may have yetanother musical element (e.g., tempo, rhythm, pace) based on acharacteristic of the configuration of each minutiae and macrofeature ora combination of minutiae and macrofeatures (e.g., positionalrelationship of a cluster of minutiae and macrofeatures).

As discussed above with regard to the methodology illustrated in FIG. 7,it will be understood that the methodology illustrated in FIG. 8 may beapplied to other unique biometric information (sweat gland pores, voice,facial features or geometry, iris pattern, hand geometry, vein pattern,heartbeat, blood flow, gestures, writing sample, DNA, skin color, bodyvibration, electromagnetic field or aura, brain wave, balance and/orbody scent) to yield a “musical pattern.” For example, the location,shape, size, positional relationship and activity level of sweat glandpores located on an individual's dermal surface may be a biometricinformation used in conjunction with the coordinate system shown in FIG.8 for generating a musical representation. Each sweat gland pore islocated on a radial axis of the coordinate system shown in FIG. 8.Accordingly, based on the point of intersection of the radial axis withthe inner and outer rings of the coordinate system, each sweat glandpore will have will have two different musical element values—a firstmusical value corresponding to the intersection point of the radial axiswith the inner ring of the coordinate system and a second musical valuecorresponding to intersection point of the radial axis with the outerring of the coordinate system. An arrangement of the musical values fora combination of any two or more of these sweat gland pore locations maybe used to generate a unique “musical pattern” representative of theindividual's sensed biometric information.

In addition, it will be appreciated that each sweat gland pore may havea third musical element (e.g., volume, amplitude, velocity, baseintensity, etc.) corresponding to the distance of theminutiae/macrofeature location from the pole or centerpoint of thecoordinate system. Moreover, each sweat gland pore may have yet anothermusical element (e.g., tempo, rhythm, pace) based on another uniquecharacteristic (e.g., size, shape, activity level, degree of detectedfluorescence) of each sweat gland pore or a combination of sweat glandpores (e.g., positional relationship of a cluster of sweat gland pores).The use of any variable sweat gland pore characteristics such as thenumber of open/closed sweat gland pores, or the size, activity level ordegree of fluorescence of open sweat gland pores provides for at least aslightly different musical representation each time the individual'sbiometrics are measured. Since the brightness of the fluorescence orlevel of sweat gland pore activity may indicative of an individual'smood or psychological state, these variable sweat gland pore biometricsmay be used to vary the volume or tempo of the musical representation.

It will be understood that because the exemplary methodologies describedabove with reference to FIGS. 7 and 8 use basic musical elements, suchas keys and more particularly key signatures, the resulting musicpatterns derived from the sensed biometric information will soundpleasant to the ear. A key signature is a combination of notes arrangedin a particular set. There are twelve major keys and twelve minor keysmaking twenty four keys altogether. Each of these keys have seven uniquenotes and each key is different from all the others. Within a keysignature, any set of notes in any order will sound appealing.Similarly, the use of other musical elements, such as chords and theinversion of chords, creates harmony between notes and will alsocontribute to the appealing sound of the musical pattern. In addition,the use of modes as a musical element functions in the same manner askey signatures to provide an appealing musical pattern.

It will also be understood that the polar coordinate system illustratedin FIG. 8 may comprise an irregular shaped two-dimensional plane, andnot simply a circular two-dimensional plane.

It will be understood that the processor module 20 may be configuredwith algorithms for processing different audio acoustic signals definedas being within the human hearing frequency range (i.e., typicallybetween 20 Hz and 20 KHz). Moreover, the processor module 20 may beconfigured with algorithms to process the detected biometric informationto an ultrasonic acoustic signal defined as being above the upper limitof the human hearing frequency range (i.e., above 20 KHz).

In addition, the processor module 30 may be configure with algorithms toprocess the detected biometric information to a digital datacommunication representative of the biometric information. This may bedone by any of a number of different techniques, including gray-scaleanalysis wherein a two-dimensional gray scale matrix is created byassigning gray-scale values for each pixel in the captured image. By wayof example, the gray-scale values may span a range from 0 to 255 with 0corresponding to black and 255 corresponding the brightest or mostintense fluorescence of the biological points on the captured image. Thegray-scale matrix may then be used to map the location, size andintensity of each detected sweat pore on the fingerpad image. Variousknown techniques may be used to extract this sweat pore information fromthe gray-scale matrix, including noise reduction, contrast enhancement,binarization, thinning, healing and feature extraction. For example, thedata generated from the captured image may be filtered to decrease theeffect of noise captured on the image.

The processor module 30 also may be configured to perform biometricidentification in connection with processing the detected biometricinformation to an audio or ultrasonic acoustic signal, or a digital datacommunication signal representative of the individual's biometricinformation. To this end, the memory associated with the processormodule is configured to store repository or reference biometricinformation for the one or more individuals. The processor module 20 isconfigured to use an algorithm to compare the detected biometricinformation with the repository of reference biometric information.After comparing the detected biometric information with the storedrepository of reference biometric information, a determination is madeas to whether the detected biometric information matches an entry in thestored repository of reference information. If a match is found, theprocessor module 30 may be configured to provide a unique audio orvisual output representative of the individual's biometric informationas a notification of positive biometric identification and/or aultrasonic representation or digital data communication for transmissionto an external device for authentication.

The processor module 30 may also be configured to process the detectedbiometric information for fanciful purposes. For example, the detectedbiometric information may comprise variable biometric information (suchas the individual's detected sweat gland pore size, shape, fluorescenceintensity or brightness, emitted electromagnetic field, body vibration,etc.) indicative of an individual's mood, energy level or generaldisposition. The processor module 20 may be configured to process anaudio acoustic signal or visual display representative of theindividual's detected variable biometric information as an indicator theindividual's mood, energy level, or general disposition. For example,the processor module 30 may be configured to vary the volume, baseintensity, or meter of a reference musical composition based on thedetected variable biometric information. Alternatively, the processormodule may be configured to select a musical composition from arepository of different musical compositions that is representative ofthe detected variable biometric information.

According to one embodiment of the present invention, processor module20 may be configured to verify or authenticate the sensed biometricinformation. To this end, the processor module memory have be configuredto store the detected biometric information and reference biometricinformation and perform verification and/or authentication routines. Theprocessor module 30 may further be configured to generate an acousticsignal, visual display or digital data transmission upon successfulverification and/or authentication.

Transmitter Module

According to one embodiment of the present invention, the transmittermodule 40 may comprise a device configured to generate an acousticsignal such as a piezoelectric device or an electro acoustic transducer.For example, the device may comprise a signal generator for generatingand emitting an audio-frequency acoustic signal and/or anultrasonic-frequency acoustic signal.

Depending on the configuration of the processor module 30, transmittermodule 40 may comprise a digital-to-analog module or an analog-to analogmodule for generating and emitting an acoustic signal representative ofthe detected biometric information. Alternatively, it will be understoodthat the processor module 30 and the transmitter module 40 may beintegrated to comprise an analog-to-analog module for processinganalog-based detected biometric information to an acoustic signal or adigital-to-analog module for processing digital-based detected biometricinformation to an acoustic signal.

According to an alternative embodiment of the present invention, thetransmitter module 40 may comprise a wireless communication interfaceconfigured to transmit a digital communication signal encoded with adata stream representative of the detected biometric information.

Transmitter module 40 may be configured to transmit an acoustic signalor digital data communication signal representative of the individual'sbiometric information to a remote device for purposes of verification,authentication or audio signal transmission. For purposes of maintainingthe confidentiality and/or proprietary integrity of the information,transmitter module 40 may be configured to transmit an ultrasonicacoustic signal or encrypted digital data communication signal to theremote device. According to this arrangement, the remote device maycomprise a network server having a repository of reference biometricinformation. Upon receiving the ultrasonic acoustic signal or encrypteddata communication signal, the remote device performs verificationand/or authentication routines comparing the biometric informationcontained in the acoustic signal or encrypted data communication withthe repository of reference biometric information.

Successful verification/authentication may result in providing theindividual with access to a secure or restricted site, access toproprietary information, authorization for a commercial transaction, orthe like. In addition, successful verification/authentication may resultin the transmission of an audio signal. Such audio signal may berepresentative of the individual's biometric information.

Alternatively, successful verification/authentication may be used toannounce the presence of or otherwise identify an individual. Forexample, successful verification/authentication may occur at theentrance of a site, and the audio signal generated based on theindividual's biometric information may be a unique audio signal that maybe recognizable by other individuals as belonging to a particularperson. By way of further example, the audio signal may be a verbalrepresentation of the individual's name.

It will be understood that the remote device may be a network server ordatabase residing, for example on a LAN, WAN, the Internet, or any othernetwork system, and that transmitter module 40 may be configured tocommunicate with the remote device via a wired or wireless communicationprotocol.

According to a further aspect of the present invention, the transmittermodule 40 may comprise a laser projected sound device configured toimprint the acoustic output on an external object.

Network Systems

The apparatus of the present invention may also be used as one of anumber of different apparatuses in a network system to form aninteractive group environment. Exemplary applications for such aninteractive group environment include computer-based (e.g., on-line)gaming environments, social media environments, and military andouter-space environments. The apparatus of the present invention mayinclude a receiver module in addition to the transmitter module, oralternatively a transceiver module, to enable interaction and/orcommunication between different network apparatuses.

Examples of apparatus interaction may comprise the transmission of andreceipt of acoustic signals and/or digital data communication signalsderived from or representative of each user's biometric information.Such communication of signals may be used for verification orauthentication of each individual's identity.

Further aspects of the present invention are described below withreference to FIGS. 4-6 and 9-13.

According to one embodiment of the present invention, the biometricidentification system is designed to detect sweat pores, independent ofany other feature of the dermal surface such as a fingerprint. FIG. 4 isa flowchart illustrating an exemplary process for detecting andanalyzing sweat pores in accordance with the invention. The processshown in FIG. 4 may be implemented in a biometric identification andproof of life system using, for example, the apparatus shown in FIG. 2.

The process begins when the sweat pore biometric identification systemdetects a fingerpad on the top surface of a transparent plate (step302). For example, sweat pore biometric identification apparatus 100detects fingerpad 160 on the top surface of transparent electrode plate110 in FIG. 2. The electrical current generated by voltage source 140induces an electromagnetic field which stimulates and excites moleculesassociated with the dermal surface of the fingerpad and, thereby, causescompounds adjacent ions within the molecules to fluoresce (step 304).Then, the sweat gland pore biometric system uses an image capture device150 (e.g., a CCD array camera) to obtain an image of the fingerpad withthe fluoresced biological points, such as the fingerpad image shown inFIG. 4 (step 306). The capture of an image of the dermal surface havingfluoresced biological points constitutes proof of liveness since only aliving being is capable of providing such fluoresced biological points.The apparatus may include a controller (not shown) configured tointerface with image capture device 150 to coordinate the detection ofthe fingerpad and the image capture of the fluoresced biological pointson the fingerpad. Such a controller may also be configured to interfacewith voltage source 140 to coordinate the detection of the fingerpad andthe generation of the electrical current and resulting electromagneticfield for stimulating and exciting the molecules associated with thedermal surface.

Next, the sweat pore biometric identification system analyzes thefluoresced biological points on the image (step 308) and uses analgorithm to compare the biometric information obtained from the imagewith reference biometric information stored in a repository, such asReference Database 312 (step 310). The step of analyzing the fluorescedbiological points may be performed by the sweat pore biometricidentification apparatus 100 or a separate device (e.g., a securenetwork server or a local computer device) coupled in communication withapparatus 100. Similarly, the step of comparing the biometricinformation obtained from the captured image with the biometricinformation stored in a repository may be performed by the sweat porebiometric identification apparatus 100 or a separate device coupled incommunication with apparatus 100. Reference Database 312 may bemaintained on the apparatus, a local storage device or a remote storagedevice. For security purposes, communications within the sweat porebiometric identification system (e.g., between apparatus 100 andReference Database 312) are preferably encrypted. For this same reason,data stored on Reference Database 312, apparatus 100 or any other deviceused in the sweat pore biometric identification system is preferablyencrypted. Accordingly, apparatus 100 comprises cryptographiccapabilities for encrypting transmitted communications, decryptingreceived encrypted communications and encrypting stored data.

Step 308 of analyzing the fluorescent biological points depicted on thecaptured image may include converting the visual information to adigital format. This may be done by any of a number of differenttechniques, including gray-scale analysis wherein a two-dimensional grayscale matrix is created by assigning gray-scale values for each pixel inthe captured image. By way of example, the gray-scale values may span arange from 0 to 255 with 0 corresponding to black and 255 correspondingthe brightest or most intense fluorescence of the biological points onthe captured image. The gray-scale matrix may then be used to map thelocation, size and intensity of each detected sweat pore on thefingerpad image. Various known techniques may be used to extract thissweat pore information from the gray-scale matrix, including noisereduction, contrast enhancement, binarization, thinning, healing andfeature extraction. For example, the data generated from the capturedimage may be filtered to decrease the effect of noise captured on theimage. This gray-scale matrix data may be encoded in a biometric barcodeas explained in more detail below.

After comparing the detected sweat pore biometric information with thestored reference biometric information, a determination is made as towhether the detected sweat pore biometric information matches an entryon the reference database (step 314). If no match is found (no output ofstep 314), the process proceeds to step 320. If a match is found (yesoutput of step 314), the process proceeds to step 316 where an indicatoris provided confirming a positive biometric identification. Such anindicator is an optional feature of the illustrated process and mayinclude a visual display and/or an audio signal. The process thenproceeds to step 318 where the biometric identification systemauthorizes access to a secure area or device.

The process of comparing the sweat pore information from the capturedimage with the stored reference sweat pore information may involvematching the locations of detected sweat pore with reference sweat porelocations. For example, the number or percentage of matches may bemeasured by a correlation score. The correlation score may also takeinto account the number or percentage of false detected sweat pores(i.e., instances where there is no reference sweat pore location whichcorresponds to a detected sweat pore location). The correlation score iscompared with a predetermined standard score for determining whether thedetected biometric information matches the reference biometricinformation.

The sweat pore biometric identification system of the present inventionmay also be used to provide a second proof of liveness measure. Not onlyare an individual's sweat pores a fixed biometric in the sense thattheir locations remain unchanged throughout the individual's life, butthey also can be considered as proof of liveness because the amount andcomposition of complex metabolic waste substances contained in sweatsecreted from an individual sweat gland and the shape, size and degreeto which each sweat pore is open (or even closed altogether or clogged)varies depending on certain conditions, including the prevailingemotional and/or physical state of the individual. Nerve fibersassociated with an individual's sweat glands function to control thedegree to which a sweat pore is open or even closed and the amount andcomposition of the sweat secreted from or contained within the sweatglands based on an individual's emotional state. For example, anindividual's prevailing level of excitement, anxiety or fear may causethe nerve fibers to activate the sweat glands to secrete varying amountsof sweat. In addition, these nerve fibers may also cause an individual'ssweat pores to open to varying degrees or even close in response to anindividual's emotional state. In contrast, the lack of any detectablevariation of the sensed biological points identifying the sweat pores isan indication of a spoofing attempt. This is because over time, therewill necessarily be at least some minimal variation in the sensedbiological points of a living being and identical or essentiallyidentical repeated detection of these sensed biological points wouldindicate an artificial non-living biometric sample. Accordingly, ananalysis of the variation of an individual's sweat pores can be used asa proof of liveness.

FIG. 5 provides a flowchart illustrating an exemplary process usingsweat pore information as a biometric for identification and proof ofliveness. The process shown in FIG. 5 may be implemented in a biometricidentification and liveness system using, for example, the apparatusshown in FIG. 2.

As with the process illustrated in FIG. 4, the process starts bydetecting a fingerpad on the top surface of a transparent electrodeplate (step 402). Electrical current generated by voltage source 140induces an electromagnetic field that stimulates and excites moleculesassociated with the dermal surface of the fingerpad causing themolecular compounds to fluoresce (step 404). Then an image capturedevice obtains an image derived from the fluoresced biological points(step 406).

Next the image is analyzed to identify sweat pore locations on thefingerpad (step 408) and the identified sweat pore locations arecompared with reference sweat pore data stored on a database (step 410).Then a determination is made (step 414) if the identified sweat porelocations match an entry on the database. If no match is found, (nooutput of step 414), the process proceeds to step 420. If a match isfound (yes output of step 414), the process proceeds to step 422.

In one embodiment, step 422 uses an algorithm to compare the sweat poredata detected from the individual and the matching reference databasesweat pore data to determine the degree of variation therebetween. Thevariation analyzed by the algorithm may include the intensity orbrightness of the fluorescence of one or more sweat pores, the size orshape of the sweat pores, and even the ability to detect the presence ofone or more specific sweat pores. Alternatively, the liveness analyzeralgorithm may compare past detected sweat pore data maintained in areference database for the identified individual with the detected sweatpore data to determine the degree of variation therebetween. Or theliveness analyzer algorithm may compare successive contemporaneousdetected sweat pore data to determine the degree of variationtherebetween. Proof of liveness is established where there is at leastsome minimal variation in the compared sweat pore data. The lack of anyvariation would indicate an artificial biometric sample and yield a nooutput in step 424.

In addition, certain variations in an individual's detected sweat porescan be used as an indicator of the individual's emotional or physicalstate. For example, even if an individual biometric identification isverified or authenticated, the detected biometric information based onvariation of sweat pore biometric information may be useful foridentifying individuals who may be experiencing emotional, psychologicalor even physical distress. This information may be particularly usefulfor identifying individuals who may present potential security threats.Alternatively, this information may be useful to identify individualswho may be in need of immediate medical attention.

In another embodiment of the invention, the biometric identificationapparatus is designed to detect the sweat gland pores along with asecond biometric such as a fingerprint to enhance biometricidentification reliability. Indeed, the unique method of stimulating themolecules associated with the fingerpad and causing molecular compoundsto fluoresce in accordance with the present invention also enables thesimultaneous detection of sweat pore and fingerprint biometricinformation. Specifically, the fluorescence of the molecular compoundsnot only creates biological points which identify the location of sweatgland pores, but also illuminates the fingerprint for image capture.

FIG. 6 is a flowchart illustrating an exemplary process for detectingand analyzing sweat gland pore and fingerprint biometric information inaccordance with the present invention. The process shown in FIG. 6 maybe implemented in a biometric identification system using, for example,the apparatus shown in FIG. 2.

As described above with reference to the exemplary biometricidentification process illustrated in FIG. 4, the process begins withthe detection of a fingerpad on the top surface of the transparentelectrode plate (step 502). The electric current through electrode 140generated by voltage source 140 induces an electromagnetic field 170 tostimulate and excite molecules associated with the dermal surface of thefingerpad and cause molecular compounds to fluoresce (step 504). Animage capture device 150 then obtains an image of the fingerpad with thefluoresced biological points and illuminated fingerprint (step 506).

Next the biometric identification system analyzes the sweat gland porebiometric information in the form of the fluoresced biological pointsand identifies sweat gland pore locations (step 508). The locations ofthe sweat gland pores may be identified by x- and y-coordinates on atwo-dimensional matrix containing a reference point. Such a referencepoint, for example, may be a designated minutiae or macrofeatureidentified on the fingerprint captured by the image. Alternatively, therelative locations of the sweat gland pores may be identified by vectorplot coordinates.

The detected sweat gland pore locations are then compared with referencesweat gland pore biometric information maintained in a secure database512 (step 510). In parallel with these sweat gland pore detection andcomparison steps, the process also performs a fingerprint identificationstep, wherein the fingerprint pattern from the captured image isanalyzed to identify unique minutiae and macrofeatures (step 526). Next,the minutiae and macrofeatures are compared to reference fingerprintdata stored in a secured database (step 528). Finally, a combineddetermination providing enhanced reliability is made based on anevaluation of the matches resulting from both the sweat pore andfingerprint biometric identification processes (step 514).Alternatively, the sweat pore and fingerprint biometric identificationprocesses may occur in series with either the sweat pore biometricidentification providing a preliminary determination subject toconfirmation by fingerprint biometric identification or vice versa.

This embodiment may be further adapted to perform a third biometricmeasure based on the combined sweat pore and fingerprint biometricinformation. Specifically, the minutiae or macrofeatures contained inthe fingerprint may be used to facilitate a mapping of the sweat porelocations yielding a combined fingerprint/sweat pore biometric.

The biometric identification information obtained by the presentinvention may also be used to create a unique biometric barcodeidentifier for each individual. This barcode may be created using one ormore of the biometric measures sensed by the present invention,including the x- and y-coordinates of the sweat gland pore locations ona two-dimensional matrix, sweat gland pore activity level as measured bybrightness or intensity, fingerprint information (including ridge/valleypatterns and minutiae/macrofeatures), and the locations of sweat glandpores relative to the fingerprint ridge/valley patterns and/orminutiae/macrofeatures.

As mentioned above, the fingerprint (ridge/valley patterns andminutiae/macrofeatures) and sweat gland pore locations on anindividual's fingerpad are invariant throughout an individual's life andare generally considered fixed biometric measures. Accordingly, thelocations of and spacing between the fingerprint ridges/valleys andminutiae/macrofeatures, as well as the locations of and spacing betweensweat gland pores provide unique biometric measures for each individual.As disclosed above, in one embodiment the present invention yields animage derived from an individual's fingerpad containing both afingerprint pattern and sweat pore locations identified by fluorescentbiological points. According to the present invention, a biometricbarcode may be created from a linear scan of the fingerprint biometricinformation and/or the sweat pore biometric information contained on thecaptured image.

More specifically, a linear scan of the image in a reference directionincluding a reference point may be reduced to binary data as a functionof the position across the individual's fingerpad. For example, a linearscan of the sweat pore location information on the fingerpad image inthe x-coordinate direction yields a signal with maxima and minima whichcorrespond to fluoresced and non-fluoresced points on the image. Thefluoresced points represent sweat pore locations and the non-fluorescedpoints represent space on the fingerpad between sweat pores. Thesemaxima and minima are then reduced to a binary ONE or ZERO,respectively. This binary data can be further reduced to a series oflines and spaces of known widths to create a first unique barcoderepresentative of the relative locations of sweat pores along the linearscan of the image in the x-coordinate direction. In this same manner, asecond unique barcode identifier may be based on the relative locationsof sweat gland pores along a linear scan of the image in they-coordinate direction. Further, a third unique barcode identifier maybe based on the activity level as indicated by measured brightness orintensity of the fluoresced points on the image along a linear scan ofthe image. In addition, a fourth unique barcode identifierrepresentative of fingerprint ridge/valley pattern and/orminutiae/macrofeature locations may be derived from a linear scan of theimage in a reference direction including a reference point. Each ofthese unique barcodes are referred to as a one-dimensional bar codesince they are representative of a single biometric measure.

In addition to these three one-dimensional barcodes, any two of thesebarcodes may be combined to provide a two-dimensional barcode derivedfrom two different biometric measures. Further, any three of thesebarcodes may be combined to provide a three-dimensional barcode derivedfrom the three of the biometric measures. In addition, all four of theexemplary barcodes may be combined to provide a four-dimensionalbarcode.

These barcode identifiers may be used in a myriad of different ways withthe biometric identification or authentication systems of the presentinvention. For example, these aspects of the invention may be used forverifying and authenticating an individual's identity in connection withcommercial air travel. To this end, the process illustrated in FIG. 4may be used to confirm that the passenger is approved for travel (i.e.,not on a no-fly list). In order to obtain a ticket, the passenger mustbe authorized to travel via the process illustrated in FIG. 4. Ifauthorized, the passenger's biometric barcode will be printed on theticket. Next, in order to board the plane, the passenger must beauthenticated using the process illustrated in FIG. 9 (described below).First, the passenger must present the ticket with the biometric barcode.Then the passenger's biometric identity must match the biometricidentity associated with the barcode on the ticket. In addition, if thepassenger checks luggage on the aircraft, the passenger's biometricbarcode will be printed on each baggage tracking label. This willfacilitate the retrieval of the passenger's checked baggage from theaircraft in the event the passenger doesn't board the aircraft or isdenied boarding the aircraft. In addition, the barcode on the baggagetracking label may also be used at the baggage claim site to preventunauthorized individual's from taking a passenger's luggage.

The biometric identification and barcode aspects of the presentinvention may also be used by mail delivery or courier services forassigning an individual's identity to a package or letter. In thisregard, the biometric identification system and barcode enable thedelivery or courier service to identify the individual who shipped apackage or letter. As will be appreciated, this will function as astrong deterrent against the use of mail delivery or courier servicesfor the shipment of illegal materials, including explosives or illicitdrugs.

Alternatively, the biometric audio signal may be derived from anindividual's barcode identifier. This biometric audio signal may be usedas the audio signal broadcast to confirm positive biometricidentification according to the optional feature of step 316 of theprocess illustrated in FIG. 4.

The present invention may also be adapted to detect and analyze thecomposition of the sweat contained in or secreted from an individual'ssweat glands. To this end, the top surface of the transparent electrodemay be coated with a transparent film that is designed to detect certaincomponents in an individual's sweat. For example, it is known that sweatcontains an individual's DNA fragments which may be detected and used asanother source of biometric identification information. In addition, itis also known that sweat contains chemical compositions indicative ofsubstances ingested by an individual such as alcohol or drugs(prescription or illicit). Moreover, the amounts of detectedcompositions in an individual's sweat may be indicative of theprevailing amount of alcohol or drugs in the individual's blood stream.Therefore, for example, the detection of an amount of a particularsubstance in an individual's sweat may be used to determine if theindividual has a blood alcohol content exceeding a permissible limit.Similarly, this detection system may be used to determine if anindividual is under the influence of an illicit drug. By way of furtherexample, the detection of a substance indicative of the presence orlevel of a prescription drug in the individual's blood stream may beuseful as a non-invasive method of determining whether an individual hasa particular medical condition that merits attention.

Further, the present invention may be adapted to detect and analyze thecomposition of the sweat secreted from an individual's sweat pores formedical diagnostic purposes. For example, the chemical composition ortemporal variation in the chemical composition of an individual's sweatmay be indicative of the individual's health condition, includingwhether the individual has contracted a disease or illness.

Furthermore, the present invention may be adapted to detect, analyze andtreat diseases such as cancerous skin cells. Specifically, the presentinvention may be adapted to detect cancerous skin cells based ondetected variations, disturbances or fluctuations to an inducedelectromagnetic field. The present invention may further be configuredto analyze the detected electromagnetic field disturbances and generatea subsequent customized electromagnetic field to treat the cancerousskin cells.

Moreover, the present invention may be adapted to detect and analyze theresidual material or substances on an individual's dermal surface. Tothis end, the top surface of the transparent electrode may be coveredwith a transparent film which is designed to detect the existence ofcertain substances residing on the individual's dermal surface. Forexample, the transparent film may be used to detect any residualexplosives material on an individual's fingers or palms. Thisinformation could be particularly useful for identifying individuals whomay present potential security threats.

With regard to each of the detection systems for indicators based on thecomposition of the sweat or residual material or substances on theindividual's dermal surface, the apparatus of FIG. 2 may be adapted toinclude a display screen for viewing by a security agent.

The biometric identification system of the present invention isparticularly useful in a mobile system comprising a portable biometricidentification detection device coupled via a communication network witha central database. To this end, the portable device may comprise anetwork communication interface for communicating with the centraldatabase. Alternatively, the portable device may comprise an externalcommunication interface configured to communicate with a network device(such as a personal computer) having a network communication interface.The external communication interface may be a serial communicationinterface such as a universal serial bus or a wireless communicationinterface such as Bluetooth protocol.

The present invention may also be used as a biometric authenticationsystem for verifying the purported identity of an individual. FIG. 9 isa flowchart illustrating an exemplary biometric authentication processbased on the detection and analysis of sweat pores in accordance withthe present invention. The process shown in FIG. 9 may be implemented ina biometric system using, for example, the apparatus shown in FIG. 2.

The process begins when the apparatus receives an alleged identity fromthe subject individual (step 800). This step can be implemented where,for example, the subject individual presents an identification badge,passport, credit card, bank ATM card, VPN token or any other source ofidentification to a reader, scanner or any other device configured toreceive identification information from the identification source. Theapparatus itself may comprise a reference biometric identificationdatabase and perform the biometric authentication process.Alternatively, the authentication system may comprise a remote serverconfigured to perform the authentication process and/or a remotedatabase containing reference biometric identification information,wherein the server and/or database reside, for example, on a LAN, WAN orthe Internet. For example, with regard to identification sources such asa credit card, bank ATM card or VPN token, the biometric authenticationsystem may comprise a computer device having a network interfaceconfigured to communicate via a network, such as a LAN, WAN or theInternet, with a remote server and central database.

The process also proceeds from steps 802 to 808 in the same manner asdescribed above with regard to the process illustrated in FIG. 4. Asshown in FIG. 9, the purported identity information is inputted to thesecure database 812, which in turn, submits reference biometricidentification data for comparison with the detected sweat porebiometric data (step 810). After comparing the detected sweat porebiometric information with the stored reference biometric information, adetermination is made as to whether the detected sweat pore biometricinformation matches the reference biometric identification data (step814). If no match is found (no output of step 814), the process proceedsto step 820. If a match is found (yes output of step 814), the processproceeds to step 816 where an indicator is provided confirming apositive biometric authentication. Such an indicator is an optionalfeature of the invention and may include a visual display and/or anaudio signal. The process then proceeds to step 820 where the biometricauthentication system authorizes access to a secure area or device.

Thus, having described several embodiments, it will be recognized bythose skilled in the art that various modifications, alternativeconfigurations, and equivalents may be used in connection with thepractice of the present invention. For example, the biometricidentification and authentication processes of the exemplary embodimentsillustrated in FIGS. 4-6 and 9 provide for authorized access to a securearea or device upon successful biometric identification orauthentication. However, it will be understood that these processes mayalso be used in other contexts, including authorization for a commercialcredit transaction or banking transaction. With regard to a commercialcredit transaction, for example, the biometric identification andliveness process illustrated in FIG. 5 may be modified such that step418 authorizes the execution of a commercial credit transactioninvolving an individual's online account. In this example, step 418would involve transmitting a communication to a secure databaseauthorizing a credit transaction for a specific account. Thecommunication may be encoded with the individual's biometric dataobtained from either the captured fingerpad image or the matching entryfrom the reference database for identifying the individual's account onthe secure database. Such a system would circumvent many of the mostprevalent identify theft issues as it would eliminate the need for anindividual to present a credit card account number and use signatureauthorization. In addition, the written receipt confirming thistransaction and the purchased product may be linked together by labelingor stamping each with the purchaser's identification bar code. This useof the individual's identification bar code may function as a theftdeterrent system for a retailer and it may also function to confirm theauthenticity of the original transaction in connection with the returnof a product to the retailer for refund or exchange.

FIG. 11 is a schematic diagram illustrating another embodiment of thepresent invention for biometric identification and proof of livenessbased on the detection and analysis of sweat gland pores on anindividual's fingerpad. As shown in FIG. 11, the biometricidentification apparatus 900 comprises a voltage source 940, anelectrode 910 and an electromagnetic field reader 980. Voltage source940 is configured to generate an electrical current through electrode910, which induces an electromagnetic field 970. Preferably, voltagesource 940 is an alternating current voltage source and the resultingalternating electrical current transmitted through electrode 910 isbetween about 0.01 milliamps and about 25 milliamps, and more preferablybetween about 0.5 milliamps and about 5.0 milliamps. In addition, theresulting alternating electrical current transmitted through transparentelectrode 910 preferably has a frequency of about 60 Hz or less, andmore preferably between about 20 to about 50 Hz. It will be understood,however, that any electrical current that induces an electromagneticfield which enables biometric identification and/or proof of livenessbased on the detection and analysis of sweat gland pores falls withinthe scope of the present invention. For example, a current greater thanabout 25 milliamps may be used if a suitable insulator is used toprevent physiological reaction with an individual's dermal surface.Similarly, a current less than about 0.01 milliamps may be used if asuitable amplifier or other device is used to enable the detection ofthe variations, fluctuations or disturbances to the electromagneticfield caused by the interaction with the individual's dermal surface. Inaddition, the electromagnetic field may be induced by a pulsedelectrical current. Although not shown in FIG. 10, it will beappreciated that the electrical circuitry of apparatus 900 is configuredto provide the desired electrical current through the electrode 910,which, in turn, induced electromagnetic field 970.

As shown in FIG. 11, electromagnetic field reader 980 may be integrallyformed with electrode 910. Alternatively, it will be understood thatelectromagnetic field reader 980 may be positioned separately fromelectrode 910 at any location that is suitable for monitoringelectromagnetic field 970. The top surface of the apparatus configuredto receive the individual's fingerpad may optionally be coated with apolymer material 920 to prevent electrical charge from being transmittedto the individual's fingerpad.

According to this embodiment, the electrode 910 is configured to emit anelectromagnetic field 970 induced by the electrical current generated byvoltage source 940. Electromagnetic field reader 980 is configured todetect and capture information regarding electromagnetic field 970,including any variations, fluctuations or disturbances thereto when anindividual's fingerpad is placed in the proximity of electromagneticfield 970. Apparatus 900 may include a controller (not shown) configuredto interface with the electromagnetic field reader 980 and analyze theelectromagnetic field information detected by the electromagnetic fieldreader 980 when the individual's fingerpad is placed in the proximity ofelectromagnetic field 970. The controller may comprise a graphicsprocessor capable of storing, processing and/or generating an imagerepresentative of the electromagnetic field information detected byelectromagnetic field reader 980.

It is also contemplated that quantum atom theory concepts associatedwith electromagnetic fields may be applied with regard to the detection,communication and comparison of biometric information based on thevariations, fluctuations or disturbances in electromagnetic field 970.For example, the variations, fluctuations or disturbances to theelectromagnetic field detected by the electromagnetic field reader 980may be measures of atoms distorting the geometry of space and time(“spacetime”) in the electromagnetic field. Further, the detectedbiometric information may be stored and communicated to a remotedatabase via geometric fractals associated with the electromagneticfield.

Apparatus 900 may alternatively comprise an image capture deviceconfigured to obtain an image of the visible light range of theelectromagnetic spectrum resulting from the interaction of anindividual's fingerpad (an in this example, the sweat gland pores on thefingerpad) with electromagnetic field 970. According to this alternativearrangement, the image capture device is operatively coupled to thecontroller and the controller is configured to analyze the biometricinformation contained in the image of the visible light range of theelectromagnetic spectrum.

Without wishing to be bound by any particular scientific theory orexplanation, applicant believes that the physical characteristics of thesweat gland pores and/or the materials contained therein have conductiveproperties which interact with and cause variations, fluctuations ordisturbances to electromagnetic field 970. Moreover, the detectedvariations, fluctuations or disturbances to electromagnetic field 970are indicative of the location, shape and size of the sweat gland pores.It is also believed that the unique concaved contour of the sweat glandpore also interacts with and causes variations, fluctuations anddisturbances to the electromagnetic field from which sweat gland porebiometric information may be derived. Surprisingly, applicant hasdiscovered that this method also detects the location of closed orclogged sweat gland pores. This unexpected result provides enhancedreliability for the detection of sweat gland pore biometricidentification.

FIG. 11 is an image of the visible light range of the electromagneticspectrum representing sweat gland pore biometric information. This imagemay be obtained by an image capture device or generated by a graphicsprocessor based on electromagnetic field data detected by anelectromagnetic field reader. The image represents three sweat glandpore biometric measures derived from the variations, disturbances andfluctuations in the electromagnetic field 970. Each cross mark(separately numbered 1-20) represents the x- and y-coordinate locationsof a sweat gland pore on a two-dimensional matrix. In addition, theactivity level of each sweat gland pore contributes to the intensity ofthe electromagnetic disturbance and is shown by the color groupings inthe image. These color groupings also correspond to the brightness ofthe fluorescence of the sweat gland pores as detected by the embodimentof the invention described above with reference to FIG. 2. Sweat glandpores 1-9 form a first cluster of sweat gland pores which define thewhite region of the image and have the highest activity level orbrightest fluorescence. Similarly, sweat gland pores 10-18 form a secondcluster of sweat gland pores which define the blue region in the imageand have the second highest activity level or fluorescence. Sweat glandpores 19 and 20 form a third cluster of sweat gland pores which definethe yellow region in the image and have the third highest activity levelor fluorescence. It will be understood that each of these coloredregions may also include closed or clogged pores not designated by across mark and which do not contribute any intensity level orfluorescence to the image.

The x- and y-locations of the sweat gland pores and the configuration ofthe colored regions show in the image of FIG. 11 can be used as acombined biometric measure and proof of liveness. First, the x- andy-locations of the sweat gland pores are a static biometric that can becompared with a reference biometric for authentication or verificationpurposes. Because sweat gland pores may become clogged or closed at anygiven time, a comparison of the detected and reference sweat gland porelocations which yields a sufficient number of positive matching detectedsweat gland pores results in a positive identification. Because theactivity level of any given sweat gland pore varies over time, asufficient minimal variation in the configuration of the colored regionsof the image is indicative of proof of liveness.

FIG. 12 is a flowchart illustrating an exemplary process for a biometricidentification and proof of life system using the apparatus shown inFIG. 10. In the initial state (step 1102), voltage source 940 generatesan electrical current in electrode 910, which, in turn, induces anelectromagnetic field 970 across the surface configured for receivingthe individual's fingerpad. The sweat pore biometric identificationsystem then detects the individual's fingerpad (step 1104). Subsequentto detecting the fingerpad in step 1104, the electromagnetic fieldreader obtains information regarding variations, fluctuations ordisturbances to the electromagnetic field resulting from interactionwith the electromagnetic field by the individual's fingerpad (step1106). These variations, fluctuations or disturbances are thencorrelated to identify the detected locations and physical contours,including the size and shape, of the sweat gland pores (step 1108).

Next, the sweat gland pore biometric identification system uses analgorithm to compare the detected sweat gland pore biometric informationwith reference biometric information stored in a repository, such asReference Database 1112 (step 1110). The step of analyzing the detectedsweat gland pore biometric information may be performed by the sweatgland pore biometric identification apparatus 900 or a separate device(e.g., a secure network server or a local computer device) coupled incommunication with apparatus 900. Similarly, the step 1110 of comparingthe detected biometric information with the biometric information storedin a repository may be performed by the sweat pore biometricidentification apparatus 900 or a separate device coupled incommunication with apparatus 900. Reference Database 1112 may bemaintained on the apparatus 900, a local storage device or a remotestorage device. For security purposes, communications within the sweatpore biometric identification system (e.g., between apparatus 900 andReference Database 1112) are preferably encrypted. For this same reason,data stored on Reference Database 1112, apparatus 900 or any otherdevice used in the sweat pore biometric identification system ispreferably encrypted. Accordingly, apparatus 900 comprises cryptographiccapabilities for encrypting transmitted communications, decryptingreceived encrypted communications and encrypting stored data.

After comparing the detected sweat pore biometric information with thestored reference biometric information, a determination is made as towhether the detected sweat pore biometric information matches an entryon the reference database (step 1114). If no match is found (no outputof step 1114), the process proceeds to step 1120. If a match is found(yes output of step 1114), the process proceeds to step 1116 where anindicator is provided confirming a positive biometric identification.Such an indicator is an optional feature of the illustrated process andmay include a visual display and/or an audio signal. The process thenproceeds to step 1118 where the biometric identification systemauthorizes access to a secure area or device.

In the same general manner described above with reference to FIG. 12,the alternative embodiment illustrated in FIG. 10 may also beimplemented in a sweat gland pore biometric identification system andliveness system as described in connection with FIG. 5. With regard tothe apparatus shown in FIG. 10, it will be understood that the detectedsweat gland pore location, shape and size information constitutes proofof liveness since these are not static biometrics for a living being.For example, proof of liveness can be determined if there is sufficientmatch between the detected and referenced sweat gland pore locations andat least a minimal variation between the shape and size of the matchingsweat gland pores.

Similarly, the alternative embodiment illustrated in FIG. 10 can also beimplemented in a dual biometric identification system involving thedetection and analysis of sweat gland pore and fingerprint information.To this end, the apparatus illustrated in FIG. 10 may be modified toinclude a transparent electrode and an image capture or scanning deviceto obtain the individual's fingerprint biometric information. The sweatgland pore and fingerprint verification steps may occur in parallel asshown in FIG. 6 or in series.

In addition, the alternative embodiment of the present inventionillustrated in FIG. 10 may be implemented in an authentication processbased on the detection and analysis of sweat gland pore information asgenerally described in FIG. 6.

The embodiment shown in FIG. 10 may also be configured as a biometrictape or film for use in a variety of applications. In the same mannerdescribed above with reference to FIG. 10, the biometric tape comprisesa conductor which is configured to carry an electrical current andgenerate an electromagnetic field. The biometric tape further comprisesan electromagnetic field reader which detects the distribution of theelectromagnetic field generated by the conductor. When an individualcontacts the biometric tape, the electromagnetic field reader detectsany variations, fluctuations or disturbances to the distribution of theelectromagnetic field generated by the electrical current in theconductor. The biometric tape may further comprise a voltage source forgenerating the electrical current, a graphics processor for processingthe data detected by the electromagnetic field reader and/or generatinga graphic representation depending on the result of the authenticationor verification process, a memory for storing the detected biometricinformation and a wireless communication interface for transmitting thedetected biometric information to a remote network for comparison withreference biometric information for authentication or verification.Alternatively, the biometric tape memory may be configured to store thereference biometric information and the biometric tape processor may beconfigured to perform the authentication or verification routines. Inaddition, the voltage source may be external to the biometric tape.

It will be understood that the biometric tape or film may be flexibleand lend itself to many different applications. For example, thebiometric tape or film may be integrated into the outer surface glove(e.g., the palm and/or finger portions of the glove) and enable anindividual wearing the glove to perform biometric identification of anindividual who contacts the outside surface of the glove. In addition,the tape or film may be placed on an object such as a door knob orautomobile door handle to detect the biometric identity of anyindividual who attempts to open the door. The biometric tape or film maybe applied to any other device or substrate (such as a telephone handsetor automobile steering wheel) that may be contacted by an individual'sdermal surface containing sweat gland pores.

The detection systems according to the present invention may furthercomprise a sensor which detects an individual's finger in the proximityof the top surface of the electrode and actuates the image capturedevice or voltage source to generate an electrical current throughelectrode, which, in turn, induces the electromagnetic field. In theembodiment shown in FIG. 2, image capture device 150 may be configuredto constantly monitor for any object that is placed in the vicinity ofthe transparent electrode 110. The image capture device 150 may befurther configured to detect the general characteristics of afingerprint. As shown in FIG. 13, for example, such generalcharacteristics may be the width of the fingerprint ridges A separatedby a fingerprint valley or trough B. When the image capture devicerecognizes these general features of a fingerprint in the vicinity ofthe transparent electrode, it will automatically trigger an imagecapture of the fingerpad to obtain an image of the fluoresced biologicalpoints excited by the electromagnetic field.

With regard to the embodiment of the present invention shown in FIG. 10,the electromagnetic field reader may be configured to detect a fingerpadin the vicinity of the electromagnetic field. For example, theelectromagnetic field reader may be in constant detection mode for thevariations, fluctuations or disturbances to the electromagnetic fieldthat are indicate of the features of a fingerpad. The detection ofelectromagnetic field disturbances representative of the general shapeand size of one or more sweat gland pores may act a trigger for theelectromagnetic field reader to obtain more extensive informationregarding the disturbances to the entire electromagnetic fielddistribution. Alternatively, the electromagnetic field reader may betriggered by the detection of disturbances representative of thepresence of sweat gland crystals in the electromagnetic field.

What is claimed is:
 1. A device comprising: (a) a sensor moduleconfigured to detect a first individual's biometric information; (b) atransmitter module configured to output an acoustic signal; and (c) aprocessor module configured to generate a signal for output by thetransmitter module, wherein the signal is representative of the firstindividual's detected biometric information.
 2. The device according toclaim 1, wherein the acoustic signal is an audio signal.
 3. The deviceaccording to claim 1, wherein the acoustic signal is an ultrasonicsignal.
 4. The device according to claim 1, wherein the processingmodule is configured to verify the authenticity of the firstindividual's detected biometric information.
 5. The device according toclaim 1, wherein the detected biometric information comprises uniquecharacteristics of one of more of the first individual's fingerprints,sweat gland pores, voice, facial features, iris, eye shape, ear shape,hand geometry, vein patterns, heartbeat, blood flow, gestures, writingsample, DNA, skin color, body vibration, brain wave, electromagneticfield or aura, balance, or body scent.
 6. The device according to claim1, wherein the device further comprises a receiver module configured toreceive a signal representative of a second individual's detectedbiometric information.
 7. The device according to claim 6, wherein thetransmitter module is further configured to output an acoustic signalrepresentative of the second individual's detected biometricinformation.
 8. The device according to claim 7, wherein the acousticsignal representative of the second individual's detected biometricinformation is an audio signal.
 9. The device according to claim 7,wherein the processor module is configured to verify the authenticity ofthe second individual's detected biometric information.
 10. A systemcomprising: (a) a first device comprising (i) a sensor module configuredto detect an individual's biometric information, (ii) a transmittermodule configured to output a signal, and (c) a processor moduleconfigure to generate a signal for output by the transmitter, whereinthe signal is representative of the detected biometric information; and(b) a second device comprising (i) a receiver module configured toreceive a signal from the first device transmitter and (ii) atransmitter module configured to output an acoustic signalrepresentative of the biometric information detected by the firstdevice.
 11. The system according to claim 10 wherein the second devicetransmitter module is configured to output an audio signal.
 12. Thesystem according to claim 10, wherein the second device transmittermodule is configured to output an ultrasonic signal.
 13. The systemaccording to claim 10, wherein the first device transmitter module isconfigured to output a digital data communication signal representativeof the detected biometric information.
 14. A method for biometricidentification comprising the steps of: (a) detecting an individual'sbiometric information; (b) generating a signal representative of theindividual's detected biometric information; and (c) outputting anacoustic signal based on the signal representative of the individual'sdetected biometric information.